使用Angular 8，如何获得对DOM元素的引用，该元素在页面其余部分加载几秒钟后加载？

import { Component, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'app-my-component',
  template: `
    <div class="myElement">Hello World</div>
  `
})
export class MyComponent {
  @ViewChild('myElement', { static: false }) myElement: ElementRef;
}

import { Component, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'app-my-component',
  template: `
    <div class="myElement">Hello World</div>
    <div *ngIf="showRestOfPage">Rest of the page content</div>
  `
})
export class MyComponent {
  @ViewChild('myElement', { static: false }) myElement: ElementRef;
  showRestOfPage = false;

  ngAfterViewInit() {
    setTimeout(() => {
      this.showRestOfPage = true;
    }, 5000);
  }
}